<?php
// rewrite simple strings
"rewrite me";
// don't rewrite complex strings
"$foo";
"{$foo}";
"${foo} bar";
"${$foo}";
"\n";
"\r";
"\t";
"\v";
"\e";
"\f";
"\f";
"\f";
"\"";
"\$";
"don't";
"\1";
"\12";
"\123";
"\x0";
"\xAF";
"\u{aa}";
"\u{0000aa}";
"\u{9999}";
"multi
line";
